StraighterLine BIO250 - Microbiology Final Exam Study Guide Questions And Answers
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Microbiology Straighterline
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Microbiology Straighterline
StraighterLine BIO250 - Microbiology Final
Exam Study Guide Questions And Answers
What is a Transforming Infection? - answerVirus that alters cell DNA, leading to cancer
What is a lysogenic infection? - answerPhage DNA is incorporated into host genome and is
passed on to subsequent generations
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StraighterLine BIO250 - Microbiology Final Exam Study Guide Questions And Answers What is a Transforming I nfection? - answer✔✔Virus that alters cell DNA, leading to cancer What is a lysogenic infection? - answer✔✔Phage DNA is incorporated into host genome and is passed on to subsequent generations What is a Lytic Bacteriophage Infection? - answer✔✔Host cell ge ts so packed with viruses that is lyses (splits) open and releases mature virions What are the three principle purposes of cultivating viruses? - answer✔✔1.) Isolate and ID viruses in clinical specimens 2.) Prepare viruses for vaccines 3.) Research viral s trucutre, multiplication cycles, genetics, and effects on hosts What are three ways in which viruses are cultivated? - answer✔✔1.) Using live animal inoculation 2.) Using bird embryos 3.) Using cell (tissue) culture techniques What are three noncellular in fections agents besides viruses? - answer✔✔Prions, viroids, and satellite viruses. List the essential nutrients of a bacterial cell: - answer✔✔CHONPS C - arbon H - ydrogen N - itrogen P - hosphate S - ulphur What are four terms that describe an organisms s ource of Carbon and Energy? - answer✔✔Photoautotrophos, chemoautotrophs, chemoheterotrophs, lithoautotrophs Define Saprobe: - answer✔✔A microbe that decomposes organic remains from dead organisms Define Parasite - answer✔✔An organism that lives in or within a host from which it obtains nutrients and enjoys protection. Produces some degree of harm to host Define Diffusion: - answer✔✔movement from high to low Define Osmosis: - answer✔✔Diffusion of wa ter through a selectively permeable membrane hypotonic cell: - answer✔✔cells that are less concentrated than their environment; water rushes in, may burst cell hypertonic cell: - answer✔✔cells that are more concentrated than their environment; water rushes out of the cell causing it to shrivel isotonic cell: - answer✔✔extracellular environment has the same concentration of solutes as the cell cytoplasm types of passive transport - answer✔✔Facilitated diffusion, molecule -specific, simple diffusion facilitate d diffusion - answer✔✔passive transport: Movement of specific molecules across cell membranes through protein channels by binding to receptors molecule specific transport - answer✔✔Passive transport goes both directions. Rate is limited by number of bindin g sites on transport proteins simple diffusion - answer✔✔Fundamental property of atoms and molecults that exist in a state of random motion Name three types of active transport: - answer✔✔Carrier mediated, group translocation, bulk transport Carrier -mediat ed Transport is... - answer✔✔Active transport where atoms or molecules are pumped into or out of the cell by specialized receptors Group translocation transport is.... - answer✔✔Active transport where molecule is moved across membrane and converted to a me tabolically useful substance Bulk transport is.... - answer✔✔active transport of large particles/cells/liquids by enfulcing in a vesicle (e.g. endocytosis, phagocytosis, etc.) Ways in which different organisms dead with oxygen... - answer✔✔Can use oxygen a nd detoxify is, can neither use nor detoxify is, cannot use but can detoxify it. What are the five types of associations microbes can have with their hosts? - answer✔✔Mutualism, Commensalism, Parasitism, Antagonism, Synergism
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